Boiler-furnace.



Patented Sept. I9, |899.

C. W. BAIRD.

BOILER FURNACE.

(Application led Jan. 7` 1B99.\

2 Sheets-Sheet l,

INo Model.)

W/TNESSES f Patented Sept. I9, |899.

C. W. BAIRD.

BOILER FURNACE.

V(Application filed Jan. '7, 1899.)

2 Sheets-Sheet 2 (No Model.)

lilll Mgww TTUHNEYS UNITED STATES PATENT OFFICE.

CHARLES lVILLlAM BAIRD, OF NEY YORK, N. Y., ASSIGNOR OF ONE-HALF TO VILLIAM I. KIDNEY, OF SAME PLACE.

BOlLER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 633,414, dated September 19, 1899.

Application led January '7, 1899.

To JZ whomj it may concer/t:

Be it known that I, CHARLES WILLIAM BAIRD, of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Boiler-Furnaces, of which the following is afull, clear, and exact description.

The object of the invention is to provide a 1o new and improved boiler-furnace arranged to permit of conveniently and quickly lining and relining the whole or a part of the fire-box and adjacent parts at a comparatively small expense, to keep the furnace at 'all times in good condition, and to insure its perfect working without the loss or waste of any heat.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of my invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a longitudinal sectional elevation of the improvement on the line l l of Fig. 2. Fig. 2 is asectional plan view of the same on the line 2 2 of Fig. 1. Fig. 3 is a sectional plan view ot' part of the improvement on the line 3 3 of Fig. l, showing the guideplate for the skeleton frame. Fig. 4 is a transverse section of the improvement on the line 4 4 of Fig. 1. Fig. 5 is a perspective view of the skeleton frame with part broken out. Fig. 6 is a perspective view of one of the bricks for the arch over the fire-door, and Fig. 7 is a sectional side elevation of the improvement with the fire-box skeleton frame partly withdrawn.

rlhe boiler A, of the usual construction, is suspended in the ordinary manner in the brickwork B, the fire-box portion of which is provided in its sides with longitudinally-extending recesses which form guideways B for the skeleton frame C, carrying the lining D in the shape of tire-clay bricks, as indicated in the drawings, the guideways B terminating at their rear ends at or near the bridgewall E, built in the usual manner, with the upper portion of {ire-brick, as indicated in Serial No. 701,482. (No model.)

Figs. l and 2. The bricks for the lining D are formed with transversely-extendingholes for engagement by bolts F, which permit of fastening the bricks in place on the skeleton frame, the front portions of the holes in the bricks that are countersunk being closed after the insertion of the bolts by suitable iireclay material D to protect the bolts from being' burned by the heat in the tire-box.

The skeleton frame C is constructed as follows: Two longitudinally-extending rails C are connected with each other by cross-bars O2 and C3, arranged to support the grate-bars, and on the longitudinal rails O are erected the skeleton sides C4, to which the fire-clay bricks D are secured by the bolts F. The bottom rows of bricks D rest on the rail C, and the forward ends of the latter are riveted or otherwise secured to the dead-plate C5,foin1- 7o ing part of the door front O6, carrying the doors G. The door front C fits onto the boiler front H, having the usual openings H for the ash-pit and doors G/ for closing the said openings H. The forward ends of the first set of grate-bars rest on the dead-plate C5, while the inner ends of the said grate-bars rest on the cross-bar C2, which also supports the front ends of the second 'or rear set of grate-bars, resting with their rear ends on the 8o cross-bar C3. The side rails C' of the skeleton frame are adapted to slide on metal guideplates Lset on bricks of the brickwork B,with the forward ends of the said guide-plates somewhat enlarged, as at l', (see Fig. 3,) to per- 85 mit of conveniently holding the guide-plates to the boiler front H, as indicated in the said figure. The enlarged portion I preferably rests on the bricks built up from the bottom of the furnace to correspond to the shape of- 9o the enlarged end. The arch -plate CT lits against the door front (1 and is supported on skeleton blocks OS, resting on the dead-plate O5, and ou the under side of the arch-plate, near the front edge thereof, is arranged a shoulder C9 for receiving the reduced end of a lire-clay brick D3, covering the under side of the arch-plate, as well as the inner face thereof, as will be readily understood by reference to Figs. i and 6. l The skeleton blocks loe C8 are lined on the inside by fire-clay bricks D2, which also support the end bricks G3 on the arch-plate, and the said bricks D3 are fastened by bolts F/ tothe skeleton blocks Csin the same manner as the bricks D are fastened to the skeleton sides C4. (See Fig. 2.)

The guideways B' are somewhat higher than the sides of the skeleton frame O, so as to gi've ample room for conveniently sliding the skeleton frame, with its lining, in position, there being also sufficient space lengthwise to allow of proper extension of the skeleton frame without straining the bridge-walls E. Vhen the skeleton frame, with the lining attached thereto, is pushed into position in the guideways B', the entire frame is jacked so as to bring the top of the sides C4 and the top edges of the lining in rm contact with the xed lining D5, built into the brickwork D, as is plainly indicated in Fig. 4. Vedges J, of iron or other suitable material, are then placed on top ot' the guide-plates I and under the rails C', so as to hold the skeleton frame in an uppermost position, as is plainly indicated in Figs. l and 4. NVhen it is desired to remove the skeleton frame for repairing the lining, the jacks are again employed to permit of holding the skeleton frame up to facilitate the removal of thewedges J and enable the location of the rollers K on the guide-plates I under the rails C', as indicated in Fig. 7. The jacks are then removed, and the skeleton frame can be readily slid outward on the rollers K to allow the engineer to conveniently repair the lining at the outside of the furnace.

On the door front .C6 is secured a wheeled arm L, (see Fig. 7,) adapted to travel on the floor to properly support the outer end of the skeleton frame when the latter is withdrawn from the furnace for repairing the lining, as above explained.

BricksD4, of lire-clay, are set over the archbricks D3 up to a supporting-plate H2, resting at its ends in the brickwork B and lined on the top by bricks D6, which also form the front smoke-box for the boiler, in conjunction with the boiler front and the head of the boilershell, as indicated in Fig. l. If desired, the supporting-plate H2 may be carried by angleirons on the boiler front to give access to the smoke-box, as indicated in Fig. 1.

It is understood that the several bricks for the lining of the fire-box are flush with each other when the several parts are in position, as will be readily understood by reference to the drawings, so that the heat from the burning fuel does not come in contact with the metal forming the skeleton frame, and consequently such metal is perfectly protected and is not liable to be burned and therefore will last a very long time. It will further be seen that when the skeleton frame is supported in an uppermost position a very firm joint is made between the bricks D of the skeleton frame and the bricks D5, forming part of the fixed lining, so that no ashes or the like can pass into the joint.

By the construction described the archplate only supports its own bricks and not arch-plate is completely protect-ed by its firebrick lining, so that it is not liable to burn out, asis so frequently the casein the boilerfurnaces heretofore constructed. Should, however, the arch-plate be injured, it can be readily removed and replaced by a' new one without disturbing the construction of the fixed part of the furnace or the remaining parts of the skeleton frame. Furthermore, as the arch-plate is supported by metallic blocks C8 from the dead-plate()5 and not from the brickwork of the furnace it is evident that the said arch-plate cannot fall down when the supporting tire-bricks are burned away, as is so frequently the case in furnaces as heretofore constructed.

lf any of the hre-bricks on the skeleton frame are burned out, they can be easily replaced by breaking the old fire-brick out and then putting new brick in position and bolting the same securely to the frame and then plugging up the hole at the ends of the bolts with cement, as before described, and indicated in the drawings.

It will be understood that the lining` for the skeleton frame may be asbestos or other material besides the fire-clay bricks, and I also may form the sides C4 of the skeleton frame directly with a lining by making the same same.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. A furnace having a skeleton frame removably mounted in the fire-box and adapted to carry the fire-brick, the frame comprising longitudinally-extending side rails connected with each other by cross-ties, a dead-plate extending between the side rails at the front thereof, the dead plate and cross-bars carrying the grate-bars, skeleton sides respectively carried by the side bars, blocks rested on the end portions of the dead-plate, an arch-plate supported on the blocks, the blocks and archplate being capable of carrying re-brick, and a door front carried on the dead-plate and arch-plate.

2. A furnace, having longitudinallyexand a skeleton frame mounted to slide in said guideways and carrying fire-brick, the skeleton frame being removable from the furnace and comprising longitudinally-extending side rails, skeleton sides mounted on the respective side rails, cross-bars extending between the side rails, a dead-plate extending between the side rails at the front of the skeleton frame, the dead-plate and cross-bars serving to supend portions of the dead-plate, an arch-plate plate being capable of carrying fire-brick,

and a door front carried by the arch-plate and dead-plate.

those of the smoke-box above, and the saidl hollow and circulating water through the' tending guideways in the sides of its hre-box IOO IIO

port the grate-bars, blocks mounted on the i carried by the blocks, the blocks and arch- 3. A furnace, having a skeleton frame slidably mounted in the fire-box and carrying lire-brick, the frame being movable out of the furnace, and a wheeled arm attached to the outer end of the frame and having its wheel bearing on the ground to support the outer end of the frame When the frame is moved out of the fire-box.

4;. A furnace, having a skeleton frame adapted to carry fire-brick, the frame being slidably mounted in the fire-box, and comprising a dead-plate, blocks mounted on the dead-plate, an arch-plate, the ends of which are supported on the respective blocks, and a door front carried by the dead-plate and arch-plate.

5. A furnace7 having a sliding skeleton frame. adapted to carry lire-brick, the frame being movable out of the furnace and the frame comprising blocks supported at the front of the frame, an arch-plate, the ends of which are sustained on the blocks, the archplate being provided with a shoulder for receiving fire-brick, whereby the fire-brick is held on the arch-plate, and a door front carried at the front of the skeleton frame and joined to the arch-plate.

G. A furnace7 having guideways formed in the sides of its fire-box, a skeleton frame sliding in the guideways and comprising longitudinally-extending side rails, skeleton sides mounted respectively on the side rails and carrying the lire-brick, cross-bars extending between the side rails, and a dead-plate eX- tending between the side rails at the front 0f the frame, the dead-plate and cross-bars serving to carry the grate-bars.

7. A furnace, having a sliding frame for brick.

CHARLES WILLIAM BAIRD.

lVitnesses: f VICTOR LEvI, RICHARD F. HEARD. 

